Alarms

Refer to the following table for information about alarms and corresponding screens. For more information about alarms refer to the GasAlertQuattro Technical Reference Guide.

Alarm	Screen	Alarm	Screen
Low Alarm Slow siren (upward tone) Slow flash Black box around gas flashes Vibrator alarm activates		TWA Alarm Fast siren (downward tone) Fast flash Black box around gas flashes Vibrator alarm activates
High Alarm Fast siren (downward tone) Fast flash Black box around gas flashes Vibrator alarm activates		STEL Alarm Fast siren (downward tone) Fast flash Black box around gas flashes Vibrator alarm activates
Multi Alarm Alternating low and high alarm siren and flash Black box around gas flashes Type of alarm alternates Vibrator alarm activates		Over Limit (OL) Alarm Fast siren (downward tone) Fast flash Black box around gas flashes Vibrator alarm activates Note: LCD may also display an under limit reading (-OL)
Sensor Alarm displays		Normal Deactivation Sequence of alternating beeps and alternating flashes Vibrator alarm activates Countdown initiates OFF displays

Note

If enabled, during an alarm condition the Latching Alarms option causes the low and high gas alarms (audible, visual, and vibrator) to persist until the alarm is acknowledged by pressingand the gas concentration is below the low alarm setpoint. The peak concentration values display continually until the alarm no longer exists. Enable/disable Latching Alarms in Fleet Manager II. Local regulations may require the Latching Alarms option be enabled.

Alarm	Screen	Alarm	Screen
Low Battery Alarm Sequence of 10 rapid sirens and alternating flashes with 7 seconds of silence in between (continues for 15 minutes) flashes Vibrator alarm pulses After 15 minutes of the low battery alarm sequence, the detector enters critical battery alarm (see Critical Battery Alarm below)		Confidence Beep One beep every 1-120 seconds (beep frequency is defined with Confidence Beep Interval option) Confidence Flash (default: one flash every 1 second) One flash every 1-120 seconds (flash frequency is defined with Confidence Flash Interval option) Heartbeat pulses once every second to verify detector is operating correctly	Note: Confidence beep and confidence flash automatically disables during a low battery alarm.
Critical Battery Alarm Fifteen minutes after low battery alarm activates, sequence of 10 rapid sirens and alternating flashes with 1 second of silence in between (sequence reactivates seven times) Vibrator alarm pulses Low Battery Powering Off displays and the detector deactivates		Note If the Low Alarm Acknowledge option is enabled, the audible alarm can be disabled during a low alarm condition. The LED and visual alarm indicators remain active until the alarm condition changes or the detector deactivates. Press to acknowledge the low alarm and deactivate the audible alarm. If the alarm escalates to a high, TWA, or STEL alarm, the audible alarm reactivates.

Alarm

Screen

Alarm

Screen

Low Battery Alarm

Sequence of 10 rapid sirens and alternating flashes
with 7 seconds of silence in between (continues for 15 minutes)
flashes
Vibrator alarm pulses
After 15 minutes of the low battery alarm sequence,
the detector enters critical battery alarm (see Critical Battery Alarm below)

Confidence Beep

One beep every 1-120 seconds (beep frequency is
defined with Confidence Beep Interval option)

Confidence Flash
(default: one flash every 1 second)

One flash every 1-120 seconds (flash frequency is
defined with Confidence Flash Interval option)

Heartbeat

pulses once every second to verify detector is
operating correctly

Note: Confidence beep and
confidence flash automatically disables
during a low battery alarm.

Critical Battery Alarm

Fifteen minutes after low battery
alarm activates, sequence of 10 rapid
sirens and alternating flashes
with 1 second of silence
in between (sequence reactivates seven times)
Vibrator alarm pulses
Low Battery Powering Off displays and the detector deactivates

Note

If the Low Alarm Acknowledge option is enabled, the audible alarm can be disabled during a low alarm condition. The LED and visual alarm indicators remain active until the alarm condition changes or the detector deactivates. Press

to acknowledge the low alarm and deactivate the audible alarm. If the alarm escalates to a high, TWA, or STEL alarm, the audible alarm reactivates.